53213331 has 8 divisors (see below), whose sum is σ = 70994880. Its totient is φ = 35453672.

The previous prime is 53213323. The next prime is 53213333. The reversal of 53213331 is 13331235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53213331 - 2³ = 53213323 is a prime.

It is a super-2 number, since 2×53213331² = 5663317192231122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53213298 and 53213307.

It is not an unprimeable number, because it can be changed into a prime (53213333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1456 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (8874360).

Almost surely, 2^53213331 is an apocalyptic number.

53213331 is a deficient number, since it is larger than the sum of its proper divisors (17781549).

53213331 is a wasteful number, since it uses less digits than its factorization.

53213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10945.

The product of its digits is 810, while the sum is 21.

The square root of 53213331 is about 7294.7468084917. The cubic root of 53213331 is about 376.1318832480.

Adding to 53213331 its reverse (13331235), we get a palindrome (66544566).

The spelling of 53213331 in words is "fifty-three million, two hundred thirteen thousand, three hundred thirty-one".